Wyoming Snow Precipitation Update
United States Natural Resources Water and Climate Center
Department of Conservation Portland, Oregon
Agriculture Service
S N O W - P R E C I P I T A T I O N U P D A T E
Based on Mountain Data from NRCS SNOTEL Sites
As of TUESDAY: JULY 27 , 1999
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BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
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WYOMING
SNAKE RIVER
BASE CAMP 7030 .0 .0 100* 34.8 30.7 114
COTTONWOOD CREEK 7600 .2 .0 * 41.3 34.3 121
GRANITE CREEK 6770 .3 .0 * 32.0 33.8 95
GRASSY LAKE 7265 .0 .0 100* 57.2 50.9 113
GROS VENTRE SUMMIT 8775 .0 .0 100* 23.7 22.9 104
LEWIS LAKE DIVIDE 7860 .0 .0 100* 52.2 51.8 101
PHILLIPS BENCH 8200 .3 .0 * 42.4 40.8 104
SALT RIVER SUMMIT 7600 .0 .0 100* 27.4 24.2 114
SNAKE RIVER STATION 6920 .0 .0 100* 36.3 35.8 102
SPRING CREEK DIVIDE 9000 .0 .0 100* 40.8 36.8 111
THUMB DIVIDE 7980 .0 .0 100* 32.3 28.9 112
TOGWOTEE PASS 9580 .0 .0 100* 40.0 38.8 104
TWO OCEAN PLATEAU 9360 .0 .0 100* 43.8 42.4 104
WILLOW CREEK 8450 .0 .0 100* 55.2 43.9 126
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Basin wide percent of average * 109
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 .0 .0 100* 33.8 29.4 116
BLACK BEAR 7950 .0 .0 100* 65.8 56.3 117
CANYON 7940 .0 .0 100* 27.4 23.2 119
FISHER CREEK 9100 .0 .0 100* 50.8 53.3 96
MADISON PLATEAU 7750 -M .0 * 42.8 37.8 114
NORTHEAST ENTRANCE 7350 .0 .0 100* 21.9 20.9 105
PARKER PEAK 9400 .0 .3 0* 31.4 26.7 118
SYLVAN LAKE 8420 -M .0 * -M 31.7 *
THUMB DIVIDE 7980 .0 .0 100* 32.3 28.9 112
TWO OCEAN PLATEAU 9360 .0 .0 100* 43.8 42.4 104
WHISKEY CREEK 6800 .0 .0 100* 35.3 32.3 110
WHITE MILL 8700 -M .0 * -M 41.9 *
WOLVERINE 7650 .0 .0 100* 19.4 22.5 86
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Basin wide percent of average 0* 109
WIND RIVER
BURROUGHS CREEK 8750 .3 .0 * 28.4 25.7 111
COLD SPRINGS 9630 .0 .0 100* 27.0 19.7 138
DEER PARK 9700 .2 -M * 38.4 -M *
HOBBS PARK 10100 .0 .0 100* 32.4 24.7 132
LITTLE WARM 9620 .2 .0 * 28.9 22.9 127
SOUTH PASS 9040 -M .0 * -M 27.9 *
ST. LAWRENCE ALT 8620 .2 .0 * 23.9 18.2 131
TOGWOTEE PASS 9580 .0 .0 100* 40.0 38.8 104
TOWNSEND CREEK 8700 .2 .0 * 29.2 22.2 133
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Basin wide percent of average * 122
BIGHORN BASIN
BALD MTN. 9375 .0 .0 100* 29.9 29.4 103
BEAR TRAP MEADOW 7900 .0 .0 100* 21.2 17.5 122
BLACKWATER 9780 .0 .2 0* 35.8 30.4 118
BONE SPRINGS DIV 9350 .0 .0 100* 30.2 27.2 112
EVENING STAR 9200 .0 .3 0* 47.4 37.2 128
GRAVE SPRINGS 8550 .2 .0 * 21.9 20.5 107
KIRWIN 9550 .0 .0 100* 25.5 21.2 121
MARQUETTE 8760 .0 .0 100* 25.4 21.9 117
MIDDLE POWDER 7760 .0 .0 100* 28.4 22.4 127
OWL CREEK 8975 .0 .0 100* 20.2 14.2 143
POWDER RIVER PASS 9480 .0 .0 100* 26.4 22.2 119
SHELL CREEK 9580 .0 .0 100* 26.7 24.7 108
SYLVAN LAKE 8420 -M .0 * -M 31.7 *
SYLVAN ROAD 8120 -M .0 * -M 27.0 *
TIMBER CREEK 7950 .0 .0 100* 20.7 17.4 119
YOUNTS PEAK 8350 .0 .0 100* 28.2 26.7 106
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Basin wide percent of average 0* 117
SHOSHONE RIVER
BLACKWATER 9780 .0 .2 0* 35.8 30.4 118
EVENING STAR 9200 .0 .3 0* 47.4 37.2 128
KIRWIN 9550 .0 .0 100* 25.5 21.2 121
MARQUETTE 8760 .0 .0 100* 25.4 21.9 117
SYLVAN LAKE 8420 -M .0 * -M 31.7 *
SYLVAN ROAD 8120 -M .0 * -M 27.0 *
YOUNTS PEAK 8350 .0 .0 100* 28.2 26.7 106
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Basin wide percent of average 0* 119
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .0 .0 100* 21.2 17.5 122
BIG GOOSE 7990 .0 -M * 22.7 -M *
BONE SPRINGS DIV 9350 .0 .0 100* 30.2 27.2 112
BURGESS JUNCTION 7880 .2 .0 * 21.7 21.9 100
CLOUD PEAK RESERVOIR 9860 .0 .0 100* 29.2 26.2 112
DOME LAKE 8880 .0 .0 100* 21.0 24.2 87
GRAVE SPRINGS 8550 .2 .0 * 21.9 20.5 107
HANSEN SAWMILL 8760 .2 .0 * 20.4 17.2 119
MIDDLE POWDER 7760 .0 .0 100* 28.4 22.4 127
POWDER RIVER PASS 9480 .0 .0 100* 26.4 22.2 119
SUCKER CREEK 8880 .5 .0 * 27.4 25.2 109
TIE CREEK 6870 .2 -M * 23.7 20.9 114
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Basin wide percent of average * 111
BELLE FOURCHE
BLIND PARK 6890 .2 .0 * 28.2 24.2 117
NORTH RAPID CREEK 6130 .0 -M * 26.7 -M *
WARREN PEAK 6520 .0 .0 100* 28.4 18.4 155
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Basin wide percent of average * 133
UPPER N. PLATTE RIVER
COLUMBINE 9400 .0 .0 100* 34.2 33.8 101
DIVIDE PEAK 8800 .0 .0 100* 36.8 33.4 110
ELK RIVER 8700 .0 .0 100* 32.5 27.5 119
JOE WRIGHT 10120 .0 .0 100* 40.9 40.0 103
NORTH FRENCH CREEK 10100 .0 .0 100* 42.7 35.9 119
OLD BATTLE 10000 .2 .0 * 54.0 43.5 125
SOUTH BRUSH CREEK 8400 5.5 .0 * 41.5 27.4 153
TOWER 10500 .0 .0 100* 56.2 53.3 106
WEBBER SPRINGS 9200 .0 .0 100* 39.8 37.3 107
WILLOW CREEK PASS 9540 .2 .0 * 20.4 22.0 93
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Basin wide percent of average * 113
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 -M .0 * 37.2 30.5 122
CASPER MTN. 7900 .0 .0 100* 28.0 26.9 105
DEADMAN HILL 10220 .0 .0 100* 27.9 28.9 97
DEER PARK 9700 .2 -M * 38.4 -M *
LAPRELE CREEK 8320 .0 .0 100* 26.9 22.2 122
RENO HILL 8400 .0 .0 100* 30.7 28.4 109
ROACH 9700 .0 .0 100* 31.0 34.2 91
SAND LAKE 10080 .0 .0 100* 45.5 32.0 143
SOUTH PASS 9040 -M .0 * -M 27.9 *
WINDY PEAK 7840 .0 .0 100* 24.2 19.7 123
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Basin wide percent of average * 113
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .2 .0 * 25.2 22.9 111
DIVIDE PEAK 8800 .0 .0 100* 36.8 33.4 110
OLD BATTLE 10000 .2 .0 * 54.0 43.5 125
SANDSTONE RS 8150 .6 .0 * 30.2 28.5 106
WHISKEY PARK 8950 .0 .0 100* 43.2 41.3 105
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Basin wide percent of average * 112
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .0 .0 100* 23.5 23.4 101
BLIND BULL SUM 8650 .0 .0 100* 32.9 32.2 103
EAST RIM DIVIDE 7930 .0 .0 100* 21.4 21.9 99
ELKHART PARK G.S. 9400 .0 .0 100* 24.4 22.9 107
GROS VENTRE SUMMIT 8775 .0 .0 100* 23.7 22.9 104
KENDALL R.S. 7740 .0 .0 100* 23.4 22.4 105
LOOMIS PARK 8240 .0 .0 100* 28.5 27.0 106
NEW FORK LAKE 8340 .0 .0 100* 21.4 20.9 103
SNIDER BASIN 8250 .0 .0 100* 26.7 21.9 123
SPRING CREEK DIVIDE 9000 .0 .0 100* 40.8 36.8 111
TRIPLE PEAK 8500 .0 .0 100* 43.5 42.8 102
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Basin wide percent of average * 106
LOWER GREEN RIVER
HAMS FORK 7840 .0 .0 100* 21.4 19.2 111
HEWINTA 9500 .0 .0 100* 23.2 22.7 103
HICKERSON PARK 9150 .3 .0 * 18.9 18.9 100
HOLE-IN-ROCK 9150 .0 .0 100* 19.7 18.9 105
INDIAN CREEK 9425 .0 .0 100* 38.9 35.5 110
KELLEY R.S. 8180 .0 .0 100* 28.7 26.9 107
STEEL CREEK PARK 10100 .0 .0 100* 28.4 25.7 111
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Basin wide percent of average * 107
UPPER BEAR RIVER
BUG LAKE 7950 .0 .0 100* 32.2 27.0 119
HAYDEN FORK 9400 .0 .0 100* 32.5 29.9 109
KELLEY R.S. 8180 .0 .0 100* 28.7 26.9 107
LILY LAKE 9050 .2 .0 * 28.7 24.4 118
MONTE CRISTO 8960 .0 .0 100* 42.2 36.7 116
SALT RIVER SUMMIT 7600 .0 .0 100* 27.4 24.2 114
TRIAL LAKE 9960 .0 .0 100* 35.3 35.3 100
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Basin wide percent of average * 111
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-M = Missing data
* = Data may not provide a valid measure of conditions.
If the Basin wide percent of average value is flagged as potentially
invalid, care should be taken to evaluate if the value is representative
of conditions in the basin.
The SNOW WATER EQUIVALENT Percent of Average represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the average value for those sites on this day.
The TOTAL PRECIPITATION Percent of Average represents the total precipitation
(beginning October 1st) found at selected SNOTEL sites in or near the basin
compared to the average value for those sites on this day.
Contact your state water supply staff for assistance.
Reference period for average conditions is 1961-90.
Provisional data, subject to revision.
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-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Normal Snow Water Equivalent and
Total Precipitation values
If the Basin Index (%) value is flagged as potentially
invalid, care should be taken to evaluate if the value is representative
of conditions in the basin.
The SNOW WATER EQUIVALENT Percent of Median represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the Median value for those sites on this day.
The TOTAL PRECIPITATION Percent of Average represents the total precipitation
(beginning October 1st) found at selected SNOTEL sites in or near the basin
compared to the Average value for those sites on this day.
Contact your state water supply staff for assistance.
Medians and averages are calculated for the period 1981-2010.
Provisional data, subject to revision.
* Site -- Either: (a) the current value is missing; (b) the median or
average for the day is not available or is zero; or (c) for snow water
equivalent, the median for the day is less than 10% of the maximum
median value for the year.
* Basin - More than half of the sites within the basin are flagged with *,
preventing the calculation of a meaningful basin index.
The basin index is calculated as the sum of the valid current values
divided by the sum of the corresponding medians (for snow water equivalent)
or averages (for precipitation) and the resulting fraction multiplied by 100.